CosmosDB emulator can't start since port is already in use

问题

I'm giving CosmosDB a chance and so I decided to build an app that uses it, but I'm running into this issue when using the emulator: Port is already in use.

I'm not sure where to reconfigure the port the emulator is pointing.

回答1:

You can use /Port option to configure the emulator to listen to a different port.

https://docs.microsoft.com/en-us/azure/cosmos-db/local-emulator#a-idcommand-lineacommand-line-tool-reference

回答2:

I had a similar problem, where i got an error "port 10253 already in use" which is a port for Direct connectivity. Direct connectivity port defaults for CosmosDB are 10251,10252,10253,10254.

Used the following Command-line Syntax to change the default port and it worked,

CosmosDB.Emulator.exe /DirectPorts=10261,10262,10263,10264

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OR (in my case)

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"C:\Program Files\Azure Cosmos DB Emulator\CosmosDB.Emulator.exe" /DirectPorts=10261,10262,10263,10264

Note: You can use port of your choice, but make sure that they are not already in use

回答3:

I finally got it working with powershell.

Import module

$env:PSModulesPath += "$env:ProgramFiles\Azure Cosmos DB Emulator\PSModules"
Import-Module Microsoft.Azure.CosmosDB.Emulator

Stop CosmosDB emulator

Stop-CosmosDbEmulator

Start CosmosDB emulator with prefered port

Start-CosmosDbEmulator  -Port 10101

And I got it working... Hope this helps.

来源：https://stackoverflow.com/questions/44851311/cosmosdb-emulator-cant-start-since-port-is-already-in-use